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The Fertile Crescent is basically where human civilization started. It stretches from Mesopotamia and across the Mediterranean coast to Egypt. Early civilizations depended on agriculture. To make agriculture, you need a river because it is a good water source to help grow your crops.
If you look at the map I have provided below, you will see that there are tons of rivers. This would make it very easy for settlers to grow crops. This means that sea tides and eroding mountains aren't the answer. I don't think the rivers were flooding and natural canals is an oxymoron because canals are artificial waterways, but this all should give you and idea.
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Population means the number of people in a geographic area. It can also be used for subgroups of people or animals.
Answer:
Genetic variation.
Explanation:
It is caused by genes inherited from parents to offspring. It is a result of genetic information from parents.
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A i think is the correct answer
Answer:
Lack of resources such as water, gas etc and proper place for living.
Explanation:
Lack of resources such as water, gas etc and proper place for living are the problems that the people would face living in this part of Kolkata because this part is located at the edge of Kolkata. Due to far from city, no resources were provided by the government to this region which causes major problems to the people that are living there so due to located on the edge, experience more problems.